[PATCH] D30136: [compiler-rt][builtins][WIP] Add _IsOSVersionAtLeast, to be used by ObjC's @available

[Erik Pilkington via Phabricator via llvm-commits]

erik.pilkington updated this revision to Diff 89717.
erik.pilkington added a comment.

Just realized I did a `if (!&CFLongFunctionName)` when I meant to do a `if (&CFLongFunctionName)`. Oops!


https://reviews.llvm.org/D30136

Files:
  lib/builtins/CMakeLists.txt
  lib/builtins/os_version_check.c

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